Galactonolactone

Galactonolactone 1
AKA: D-galactono-1, 4-lactone, 2782-07-2, Gamma-D-galactonolactone, D-galactonic acid gamma-lactone, D-Galactonic acid, Gamma-lactone, 1, 4-D-Galactonolactone, (3R, 4R, 5S)-5-[(1R)-1, 2-dihydroxyethyl]-3, 4-dihydroxyoxolan-2-one, CHEBI:15895, 5S)-5-((1R)-1, 2-dihydroxyethyl)-3
Synthetic
Humectant
Sugar-Based Active
Not Clean
D-galactono-1,4-lactone is a galactonolactone derived from D-galactonic acid. It has a role as a human metabolite. It is functionally related to a D-galactonic acid.
Formula
C6H10O6
Mol. Weight
178.14
CAS #
2782-07-2, 1668-08-2
Form
Liquid
Functions
Humectant
A moisture magnet. Pulls water from the air and deeper skin layers up to the surface to keep skin plump and hydrated.
Locks In Moisture
Traditional Use
A synthetic humectant and skin-conditioning agent developed in modern cosmetic chemistry. Created to provide gentle hydration and moisturizing benefits in skincare formulations with a gentler profile than some traditional humectants.
EWG
4
CIR
Safe as used
Pregnancy
Yes
CIR Safety Findings
medical-approval
all-shades-safe
Regulatory Status
USA✔ permitted
EU⚠ restricted
JAPAN⚠ restricted
CANADA⚠ restricted
Skin Types
●all-skin-types
Best For
Uneven Texture
Pregnancy & Breastfeeding Safe
Yes
The paper trail
🔬Peer-reviewednone on file
⚖️Regulatory1 listing →
🛡️Safety-assessed1 review →
Counts, not a verdict. A listing isn't a study. The trail, you decide.
Verified Jun 2026
Data: PubChem · CosIng · EWG · CIR